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' 2 Sheets-TSheet'l; lS. S. PUTMAN. 4 Self Lubricating Axle for Camialges.Y

. Patented Feb. 4, 1868.`

Wdh/fesses: U @05% www @with gieten etent @fitug Letters .Patent No. .74,134,0Zted February 4, 1868.

IMPROVEMENT 1N SELPLUBBIcATING AXLES ron GARRIAGBS.

@the Sttfhnie nimh it in there @titten @that mth 11m-king putt nt the same. t

TO ALL WHOM IT MAY CONCERN :v V

Be it known that I, SILAS S. PUTN nl, of Dorchester, in the county of Norfolk, and State ofMashsaehusetts, have inventedV a Self-LubricatingAnle for Garriuges, &c., o f which the following is a full, clear, and exact description, reference being had tothe accompanying drawings, making `part of thisspeciiication, in

whichnut F, which holdsthe wheel in place upon the axle G. The end of this axle is bored out, forming achamber, Iz, the mouth of which is closed by the screw-nut F. This chamber (thc length of which corresponds to thatof. the bearing-surface of the axle) is filled with a packing composed of cotton-waste, sponge, or other fibrous or porous material saturatedrwith oil or other lubricuting-substance- Figure l is a longitudinal Asection through the hub of a. carriage-wheel having my improved-axle applied thereto.

Figure 2 is a viewcof the axle d'etached. My invention consists in a. chamber within the end of the'axle, packed with fibrous or porous material for receiving and retaining asupply of lubricating-substance which passes through suitable openingsto the bearingsuriace ot' the axle; and my invention also consists in forminga chamber in the collar of the axle, which is lled with packing saturated with lubricating-substance, which passes through a. suitable opening or openingsL to the bearing-surface at the inner end of the axle-box.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried. it out. v I

In the said drawings, At is the axle-box, which is held tightiyin `place withinl the hub B by nieansof the screw-nut E, and is prevented from turning by ribs or projections a, which fit into grooves mede to receive them, the outer end 4of the axle-box being Hnished Vto form the end of the hub, and serving to protect the screwc are slots or openings communicating with the chamber an'dthlough these openings `the oil or lubricating-substance is fed byrthepncking to the bearingsurface ofthe axle. d is an opening communicating with the chamhenb, through which, or the openings c,'the oil or lubricating-substance may be introduced to saturate the packing. The collar H, at the linner end of the bearing-surface of the axle, is provided with a. chamber, e, for containing saturated packing, 'over which is Atted an annular plate or washer,f, having openings, g, through which thel oil or lubricating-substance is 'fed to the bearing-surface at the inner end'of the axle-box. It will thus he seen that when the chambers biand eai'e filled What I claim as my invention, and desire to secure by Letters Patent, is-

A chamber, b, within the end of the asie, packed with fibrous or porous material, for receiving and retaining a, supply of lubricating-substance, which passes through openings to the bearing-surface of the axle,`V substantially as described. i i

I also claim providing the collar H with a. chamber, e, for containing packing saturated with lubricating substance, substantially as and for the purpose set forth. i

SILAS S. PUTNAM.

Witnesses: A

P. E. TEscnEMAcnER, N. W. STEARNS. 

